Open main menu

Changes

Velocity

2,220 bytes added, 09:16, 12 February 2019
no edit summary
===Example Calculations===
====Calculating Constant Velocity====
{| class="wikitable"
| style="height:20px; width:200px; text-align:center;" |A [[wave]] travels 1000m in a time of 12.5s. Calculate the [[magnitude]] of the [[velocity]] of the [[wave]] correct to two [[Significant Figures|significant figures]].
| style="height:20px; width:200px; text-align:center;" |[[The Moon]] is approximately 390,000km away from the Earth. It takes a [[Radio Wave]] 1.3 seconds to travel that [[distance]]. Calculate the [[magnitude]] of the [[velocity]] of the [[Radio Wave]] correct to two [[Significant Figures|significant figures]].
| style="height:20px; width:200px; text-align:center;" |An [[Alpha Particle|alpha particle]] can travels around 6cm from a source taking 4.0ns before colliding with an [[air]] [[molecule]]. Calculate the [[magnitude]] of its [[velocity]] on this journey correct to two [[Significant Figures|significant figures]].
|-
| style="height:20px; width:200px; text-align:left;" |'''1. State the known quantities'''
 
x = 1000m
 
t = 12.5s
| style="height:20px; width:200px; text-align:left;" |'''1. State the known quantities'''
 
x = 390,000km = 390,000,000m
 
t = 1.3s
| style="height:20px; width:200px; text-align:left;" |'''1. State the known quantities'''
 
x = 6cm = 0.06m
 
t = 4.0ns = 4.0 x 10<sup>-9</sup>m
|-
| style="height:20px; width:200px; text-align:left;" |'''2. [[Substitute (Maths)|Substitute]] the numbers into the [[equation]] and [[Solve (Maths)|solve]].'''
 
<math>v = \frac{x}{t}</math>
 
<math>v = \frac{1000}{12.5}</math>
 
<math>v = 80m/s</math>
 
| style="height:20px; width:200px; text-align:left;" |'''2. [[Substitute (Maths)|Substitute]] the numbers into the [[equation]] and [[Solve (Maths)|solve]].'''
 
<math>v = \frac{x}{t}</math>
 
<math>v = \frac{390000000}{1.3}</math>
 
<math>v = 300,000,000m/s</math>
 
| style="height:20px; width:200px; text-align:left;" |'''2. [[Substitute (Maths)|Substitute]] the numbers into the [[equation]] and [[Solve (Maths)|solve]].'''
 
<math>v = \frac{x}{t}</math>
 
<math>v = \frac{0.06}{4.0 \times 10^{-9}}</math>
 
<math>v = 15,000,000m/s</math>
 
|}
 
 
====Calculating Velocity given Acceleration and Time====
 
 
====Calculating Velocity given Acceleration and Displacement====